Lawn umbrella



Oct. 27, 195-9 H. L. P. sc uNck LAWN UMBRELLA Filed May 27, 1955 UnitedStar -2s Patent LAWN UMBRELLA Horst L. P. Schunck, Aachen, Germany,assignor to Kortenbach & Rank Kommanditgesellschaft, Solingen-Weyer,Germany Application May 27, 1955, Serial No. 511,647

Claims priority, application Germany May 28, 1954 7 Claims. (Cl. 135-27)The present invention relates to lawnumbrellas. Lawn umbrellas ofvarious types are known. However, with all of the heretofore known lawnumbrellas, the ribs together with the umbrella cover confine a completepolygon. Therefore, such lawn umbrellas must be spaced from thehousewall by a distance at least corresponding to half the diameter of saidpolygon. A further drawback of this heretofore known type of umbrellasconsists in that such umbrellas cannot be fastened to a wall. Inasmuchas only very seldom the sun hits directly vertically upon the umbrellacover, but rather comes in at an angle, the heretofore known lawnumbrellas have a tiltable roof so that the latter can be tilted inconformity with the direction from which the sun comes in.

It is, therefore, an object of the present invention to provide a lawnumbrella which will overcome the above mentioned drawbacks.

It is another object of this invention to provide a lawn umbrella theroof or cover of which defines a portion only of a polygon or a circlewhile being elfective to yield the desired shading.

It is still another object of this invention to provide a lawn umbrellawhich can easily be fastened to a house wall or the like.

These and other objects and advantages of the invention will appear moreclearly from the following specification in connection with theaccompanying drawings, in which:;

Fig. 1 is the inside view of a lawn umbrella according to the inventionwhich is provided with a cover located substantially in one and the sameplane with the umbrella stick and having a relatively sharply bentmarginal portion.

Fig. 2 is a side view of the umbrella shown in Fig. 1.

Fig. 3 illustrates the main joint as seen from the outside, the coverbeing removed.

Referring now to the drawings in detail, the umbrella shown thereincomprises an umbrella stick 1 having pivotally connected thereto bymeans of pivot 20 two sleeves or supporting members 2. which pivotallysupport ribs 3.

The umbrella stick is preferably relatively short and designed so thatit can be telescopically inserted into a stick of larger diameter whichmay be connected to a frame and may be provided with a ball joint, tiltjoint or the like. The sleeves 2 have fixedly connected thereto ribs 5which latter together with the ribs 3 may be called the main ribs. Asparticularly illustrated in Fig. 1, spreaders 4 consist of two levers 4band 4c joined together by a toggle joint 4a. Spreaders 4 are linked onone hand at 6 to the ribs 5 representing the outermost ribs delimitinghalf of the circle or polygon formed by the umbrella roof, while on theother hand said spreaders 4 are linked at 7 to an inwardly extendingportion 1a of the umbrella stick 1;

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which forms an intermediate corner of the polygon portion formed by thespread or taut umbrella cover 10.

In order to give the umbrella a relatively sharply bent marginalportion, the additional rib 5a and the ribs 3 are shortly before theirouter ends provided with fiat sections 9 and at said sections are bentinwardly. For purposes of folding up the umbrella it is merely necessaryto push the spreaders 4 away from each other so that the outer ends ofthe ribs 5 move toward the free end portion 12 of the additional orintermediate rib 5a. The opening of the umbrella is efiected in acorresponding reverse manner.

As will be evident from the above, the structure according to thepresent invention yields a particularly simple and inexpensive lawnumbrella which nevertheless -will serve its purpose of providing thedesired shading; Bynemploying an umbrella roof confining a portion onlyof a circle or polygon, considerable cover material and .also a numberof ribs are saved which fact materially reduces (the cost of suchumbrella over heretofore known lawn umbrellas. Furthermore, theconstruction of the umbrella roof in conformity with the presentinvention also considerably reduces the weight of such umbrella therebysimplifying and facilitating the transport and installation of theumbrella. The new construction of the umbrella roof also makes itpossible to connect the umbrella without difliculties to the house wallor any other wall by means of sleeve connections or tubular clamps, inwhich instance also the heretofore necessary support can be saved.

It is, of course, understood that the present invention is, by no means,limited to the particular construction shown in the drawings but alsocomprises any modifications within the scope of the appended claims.

What I claim is:

1. In combination in a lawn umbrella: an umbrella cover defining, whenin taut condition, the contour of a portion only of a polygon; saidpolygon portion having an uneven number of corners; first ribsdelimiting a part of said polygon portion; two supporting membersrespectively supporting one end of said first ribs; second ribs,vrespectively having one end thereof linked to said supporting members,the other ends of said first ribs and said second ribs beingrespectively connected to said cover at the corners of said polygonportion with the exception of the intermediate corner of said polygonportion; an umbrella stick located in the plane of sym-' metry of saidpolygon portion and having an inwardly extending portion; an additionalrib having one end thereof connected to said intermediate corner andhaving its other end connected to said inwardly extending umbrella stickportion; a pivot supported by said inwardly extending umbrella stickportion, each of said supporting members being linked to and til tableabout said pivot; and spreader means respectively linked to said firstribs and also linked to said umbrella stick for selectively spreadingand holding said cover in taut condition.

2. A lawn umbrella according to claim 1, in which the supporting membersare in the form of levers, each of said levers having one arm forming asleeve receiving the adjacent first rib and having another arm pivotallyconnected to said pivot.

3. In combination in a lawn umbrella: an umbrella cover defining, whenin taut condition, a portion only of a polygon; a first supportingmember; a second supporting member; an uneven number of ribs supportingsaid cover and having one end thereof connected thereto; theintermediate one of said ribs being located in the plane of symmetry ofsaid polygon portion; the two outermost ones of said ribs having theirinner ends supported by said first and second supporting members; theribs located between one of said outermost ribs and said intermediaterib being linked to said first supporting member and the ribsintermediate said intermediate rib and the other outermost rib beinglinked to said second supporting member; an umbrella stick having oneend there of fixedly connected to that end of said intermediate rib.

which is remote from the adjacent corner of said polygon portion; saidsupporting members being pivotally connected to said stick for tiltingabout one and the same axis; and a pair of spreader link systems, eachlink system having two arms with the inner ends thereof linked to eachother by a toggle joint and'with the outer ends thereof respectivelylinked to said umbrella stick and.

the respective adjacent outermost rib.

4. A lawn umbrella according to claim 3, in which said ribs are providedwith a fiat section near the periphery of said cover and are relativelysharply bent at said flat section.

5. In combination in alaWn umbrella: an umbrella cover defining, when intaut condition, the contour of half a polygon; a plurality of ribsrespectively having one end thereof connected to the corners of saidhalf polygon; an additional rib arranged in-substantially the plane ofsymmetry of said half polygon so as to divide the first mentioned ribsinto two equal groups of ribs;

a pair of supporting members supporting the inner ends of all of saidfirst mentioned ribs so that the axes of all ported by said umbrellastick; each of said supporting members being pivotally connected to saidpivot; the two outermost ribs being substantially in alignment with eachother when said cover is in taut condition; and spreader meansrespectively linked to said two outermost ribs and also linked to saidumbrella stick.

6. A' lawn umbrella according to claim 3, in which said stick extendssubstantially in alignment with the adjacent ends of said ribs.

7. A lawn umbrella according to claim 3, in which theouter end of theumbrella stick protrudes outwardly beyond the two outermost ribs.

References Cited in the file of this patent UNITED STATES PATENTS ShaineMar. 23, 1897 Ryder Jan. 26, 1915

